© Panasonic Corporation 2014.Unauthorized copying and distribution is a violationof law.
ORDER NO. MTNC140103CE
32 inch Class 720p LED LCD TV
Model No.
TC-32A400U
KM25 Chassis
Page 1: ... Panasonic Corporation 2014 Unauthorized copying and distribution is a violation of law ORDER NO MTNC140103CE 32 inch Class 720p LED LCD TV Model No TC 32A400U KM25 Chassis ...
Page 2: ...de 8 5 2 Hotel mode 9 6 Troubleshooting Guide 10 6 1 Check of the IIC bus lines 10 6 2 Power LED Blinking timing chart 11 6 3 LCD Panel test mode 11 7 Disassembly and Assembly Instructions 12 7 1 Disassembly Flow Chart for the Unit 12 7 2 Disassembly Procedure for the Unit 12 8 Measurements and Adjustments 17 8 1 Voltage chart of P board 17 8 2 Voltage chart of A board 17 9 Block Diagram 18 9 1 Ma...
Page 3: ...units Replace the entire wiring unit instead 6 When conducting repairs and servicing do not twist the Fasten connectors but plug them straight in or unplug them straight out 1 2 Touch Current Check 1 Plug the AC cord directly into the AC outlet Do not use an isolation transformer for this check 2 Connect a measuring network for touch currents between each exposed metallic part on the set and a goo...
Page 4: ... of the assembly 3 Use only a grounded tip soldering iron to solder or unsolder ES devices 4 Use only an anti static solder removal device Some solder removal devices not classified as anti static ESD protected can generate electrical charge sufficient to damage ES devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices 6 Do not remove a...
Page 5: ...ee solder has a higher melting point than standard solder Typically the melting point is 50 70 F 30 40 C higher Please use a high temperature soldering iron and set it to 700 20 F 370 10 C Pb free solder will tend to splash when heated too high about 1100 F or 600 C If you must use Pb solder please completely remove all of the Pb free solder on the pins or solder area before applying Pb solder If ...
Page 6: ...6 3 Service Navigation 3 1 PCB Layout Board Name Function A Board Main K Board Remote Receiver LED P Board Power supply Power switch Control Button ...
Page 7: ...ker Output 20 W 10 W 10 W 10 THD Channel Capability Digital Analog VHF UHF 2 69 CATV 1 135 Operating Conditions Temperature 32 F 95 F 0 C 35 C Humidity 20 80 RH non condensing Connection Terminals VIDEO IN RCA PIN VIDEO AUDIO L AUDIO R COMPONENT IN RCA PIN Y PB PR AUDIO L AUDIO R HDMI IN 1 2 TYPE A Connector USB USB2 0 Type A connector DC 5V Max 500mA DIGITAL AUDIO OUT PCM Dolby Digital Fiber Opti...
Page 8: ... shown as a hexadecimal number Preset value differs depending on models After entering the adjustment mode take note of the value in each item before starting adjustment 5 1 5 Display of SOS History SOS History Number of LED blinking indication From left side Last SOS before Last three occurrence before 2nd occurrence after shipment 1st occurrence after shipment This indication except 2nd and 1st ...
Page 9: ...olume when each time power is switched on Range 0 to 100 Vol Max Adjust maximum volume Range 0 to 100 OSD Ctrl Restrict the OSD Selection Off Pattern1 Off No restriction Pattern1 restriction FP Ctrl Select front key conditions Selection Off Pattern1 All Off altogether valid Pattern1 only input key is valid All altogether invalid Pow Ctrl Select POWER ON OFF condition when AC power cord is disconne...
Page 10: ...onds Self check indication and forced to factory shipment setting Produce TV reception screen and while pressing VOLUME button on the main unit press MENU button on the remote control for more than 3 seconds 6 1 2 Exit Disconnect the AC cord from wall outlet or press the POWER button on the main unit for 3 seconds to turn off and then turn on automatically 6 1 3 Screen display 6 1 4 Check Point Co...
Page 11: ...o Exit Switch off the power with the POWER button on the main unit or the POWER button on the remote control How to confirm If the abnormal picture is displayed go into LCD Panel test mode to display the several test patterns And then judge by the following method Still abnormal picture is displayed The cause must be in LCD Panel Normal picture is displayed The cause must be in A board Remarks The...
Page 12: ...embly chart When assembling perform this chart conversely 7 2 Disassembly Procedure for the Unit 7 2 1 Pedestal 1 Lay down the unit so that the rear cover faces upward 2 Remove the 4 screws 3 Remove the pedestal 7 2 2 Rear cover 1 Remove the 16 screws A 2 Remove the 4 screws B 3 Remove the Rear cover ...
Page 13: ...emove the 5 screws 3 Remove the P Board 4 Remove the Key Button Bracket 5 Remove the P PCB Barrier 7 2 4 A Board 1 Disconnect the connectors A02 A10 A12 and A16 2 Remove the 2 screws 3 Remove the A Board 4 Remove the Side AV Bracket 5 Remove the CH Mount Boss ...
Page 14: ... the Cabinet 2 Disconnect the connector K10 3 Remove the LED Panel the K Board the LED Panel Case 7 2 6 Speakers 1 Remove the 2 speakers 2 Remove the 4 screws 3 Remove the 4 SP Brackets 7 2 7 Vesa Metal 1 Remove the 2 screws 2 Remove the 2 Vesa Metals ...
Page 15: ...15 7 2 8 Vertical Metal Bracket and LCD panel 1 Remove the 4 screws 2 Remove the 2 Vertical Metal Brackets 3 Remove the LCD panel NOTE The Cabinet comes together with the LCD panel ...
Page 16: ...16 7 2 9 Felt Sponge and so on ...
Page 17: ...ltage chart of A board VOLTAGE TEST POINT SPECIFICATION 5 3V TP7507 5 3V 0 3V 16V TP7512 TP7513 15 8V 0 6V VOLTAGE TEST POINT SPECIFICATION PANEL12V TP4300 11 50V 12 50V SUB5V TP8002 4 92V 5 25V SUB3 3V TP8003 3 19V 3 46V SUB1 2V TP8004 1 14V 1 26V STB5V TP8009 5 3V 0 3V ...
Page 18: ...TMDS DATA STB3 3V DEMOD ANALOG VIDEO INPUT AUDIO IN MAIN SUB_ON BL_PWM SUB_ON BL_ON KEY1 KEY1 LLC CONVERTER REG MTK INPUT FILTER SUB5V SPEAKER L LED BACK LIGHT POWER ON SPI BUS BL_SOS NEUTRAL BL_SOS BL_SOS AC CORD 24V SPI ROM STB5 3V 16 4V PFC AC DETECT CONTROL PANEL KEY POWER ON LIVE AMP OVP DET SOUND SOS STB3 3V P15V STB5 3V STB5V SUB5V SUB5V DCDC SUB1 2V STB3 3V VCCK1 2V STB3 3V DCDC DDR1 5V DD...
Page 19: ...ILTER 8 PNL12V MAIN 10 A BL_PWM RECTIFIER JK7101 30 KEY 27 LVDS DATA 8 LF7104A LF7103A CF7101 P SUB3 3V 2 D7102 19 IC7301 Q7301 3 3 4 2 IC8004 4 POWER ON POWER ON LED DRIVE ERROR DETECT PC7301 5VS SUB5V IC7501 PC7300 PHOTO COUPLER PHOTO COUPLER 8 3 2 13 10 12 11 9 1 6 2 1 SW2857 CONTROL PANEL KEY POWER SW SW2851 2855 L7801 ANODE D7802 Q7808 9 Q7803 CATHODE Q7801 5V IC7800 P3 3 1 P2 A02 A11 12V PAN...
Page 20: ...N SUB3 3V 5V STB3 3V USB I F DMD_ IIC0 SPI BUS BL_PWM ARC_OUT UART USB1 STB_RST IC8001 P_HDMI_CEC COMPONENT VIDEO SPEAKER_R BL_ON POWER_SOS P_GPIO AVDD3V3 L SP_MUTE JK3101 R 7 5 3 4 1 K10 7 5 3 4 1 A10 2 1 4 3 A12 Y V L PB R PR TMDS DATA CLOCK ARC_OUT DDC IIC0 HDMI_CEC 5V P_HDMI_1__IIC TMDS DATA CLOCK P_HDMI_1_RX P_ASPDIFO SUB3 3V P_ASPDIFO 24MHZ X8301 X6750 IF_AGC JK6753 AL DLIF_ P N 1 8V RF IN A...
Page 21: ...Diagram 10 1 Caution statement Caution Please confirm that all flexible cables are assembled correctly Also make sure that they are locked in the connectors Verify by giving the flexible cables a very slight pull 10 2 Wiring 1 ...
